TryExec needs absolute path too, otherwise the desktop file will be ignored
unless gnome-session is in PATH, in which case, we would not need to patch
Exec.
GPaste GNOME Shell extension uses GPaste library generated via introspection. Previously, we added the gpaste package to services.xserver.desktopManager.gnome3.sessionPath option, which
added its typelib directory to GI_TYPELIB_PATH environment variable globally, in order for GNOME Shell to be able to find it. This is not very Nix-y, though, so we have decided to patch the code to
append the path to the GI repository search path.
Additionally, the code relies on GPaste’s GSettings schemas, so we had to hard-code the paths to them as well. We ignored the GNOME Shell’s schemas, since they will already be available for the
extension inside GNOME Shell program.
When creating a new mobile broadband connection
with the plasma network manager connection editor,
it tries to find a file containing provider
information somewhere in /usr/share/... .
The build recipe contains a patch to fix the lookup path
such that it finds the file in the corresponding package,
probably added due to
https://github.com/NixOS/nixpkgs/issues/9389 .
The actual lookup path is injected into
the patch file with substituteAll.
With commit a31d98f312 ,
the variable name used in subsituteAll changed from
mobile_broadband_provider_info to mobile-broadband-provider-info
(underscores in package names turned into dashes).
Apparently, substituteAll can't handle dashes in variable names.
Consequently, the variable name was no longer resolved.
plasma-nm failed to create new mobile broadband connections;
the connection creator silently exited and logged the error
> plasma-nm: Error opening providers file "@mobile-broadband-provider-info@/share/mobile-broadband-provider-info/serviceproviders.xml"
This commit keeps the dashes in package names, but it
restores the underscores in the variable used by substituteAll,
thereby ensuring the variable gets resolved properly.
